Fortnite and Ark use the exact same engine. This is purely a developer thing though I hear they have gotten better at optimizing as time has gone on.
ARK runs on Unreal Engine? O_O
I guess your right, its just the devs are horrible at optisation then.
because what the fortnite devs could do with it, on a mobile phone is crazy impressive.
Necro-bump this 2020: http://gamrconnect.vgchartz.com/thread.php?id=229249
Bumb in 2021: http://gamrconnect.vgchartz.com/post.php?id=9047071